PROBLEM TO BE SOLVED: To provide a work vehicle capable of increasing an air flow without increasing wind speed of ambient air supplied to a radiator or the like.SOLUTION: A work vehicle comprises: a radiator 31 for cooling water for cooling for an engine 14； a first suction case 50 which is provided on outside of a vehicle body of the radiator 31, and closes the outside of the vehicle body of the radiator 31 in a state of allowing air permeation and inhibiting passage of dusts； and a cooling fan 32 which is provided on inside of the vehicle body of the radiator 31, which draws ambient air thereinto through the first suction case 50 by rotation drive, for cooling the radiator 31. The work vehicle further comprises a second suction case 57 which is provided in a state of allowing air permeation and inhibiting passage of the dusts, and communicating to an internal space S of the first suction case 50, in which the ambient air is drawn through the second suction case 57 and is distributed into the internal space S by rotation drive of the cooling fan 32.SELECTED DRAWING: Figure 3【課題】ラジエータ等に供給される外気の風速を増加させずに風量を増加させることができる作業車を提供する。【解決手段】エンジン１４の冷却水を冷却するラジエータ３１と、ラジエータ３１の機体外側に設けられ、通気を許容し且つ塵埃の通過を阻止する状態で、ラジエータ３１の機体外側を塞ぐ第一吸気ケース５０と、ラジエータ３１の機体内側に設けられ、回転駆動によって第一吸気ケース５０を通して外気を引き込んでラジエータ３１を冷却する冷却ファン３２と、が備えられ、通気を許容し且つ塵埃の通過を阻止する状態、かつ、第一吸気ケース５０の内部空間Ｓと連通する状態で設けられた第二吸気ケース５７が備えられ、冷却ファン３２の回転駆動によって、外気が第二吸気ケース５７を通して引き込まれて内部空間Ｓに流通する。【選択図】図３
